Software section
3.2 Creating the program
S7-1500
50 Getting Started, 05/2014, A5E03981761-AC
Deleting program block Main [OB1]
Introduction
In the following section, you will delete the automatically generated "Main [OB1]" program
block from the project folder. A "Main [OB1]" program block is included in the program blocks
of the example project.
Organization blocks (OBs) form the interface between the CPU operating system and the
user program. These blocks are called by the operating system. At least one cycle OB must
be available in an automation project.
1. Open the "Program blocks" folder in the project tree and then click the "Main [OB1]"
program block.
2. Right-click to open the shortcut menu and then click "Delete".
3. Click "Yes" to confirm deletion of the block.
The automatically generated "Main [OB1]" program block is deleted.
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